- recession velocity
- Return to Africa
- refugee route
- ranging-pole
- ranging-rod
- Rostock-Laage Airport , RLG , ETNL
- regular flight
- Rechlin-Lärz Airfield , REB , EDAX
- Reichelsheim Airport , QRE , EDFB
- Reinsdorf Airfield , EDOD
- Rendsburg-Schachtholm Airport , EDXR
- Riesa-Göhlis Airport , IES , EDAU
- rust bloom
- Ramstein air show disaster
- reallocation and consolidation of agricultural land holdings
- reallocation of land
- reallocation and consolidation plan
- River of Doubt
- River of Death
- river nerite
- river flood plain
- river flood plains
- run upstream
- river launch
- river bridge
- river castle
- river dyke
